public class test1 {
    public static void main(String[] args) throws InterruptedException {
        Object lock1=new Object();
        Object lock2=new Object();
        Object lock3=new Object();

     Thread t1=new Thread(()->{
         for (int i = 0; i <10 ; i++) {
             synchronized (lock1){
                 try {
                     lock1.wait();
                     System.out.print("A");
                     synchronized (lock2){
                         lock2.notify();
                     }
                 } catch (InterruptedException e) {
                     throw new RuntimeException(e);
                 }
             }

         }
     });


        Thread t2=new Thread(()->{

            for (int i = 0; i < 10; i++) {
                synchronized (lock2){
                    try {
                        lock2.wait();
                        System.out.print("B");
                        synchronized (lock3){
                            lock3.notify();
                        }
                    } catch (InterruptedException e) {
                        throw new RuntimeException(e);
                    }
                }

            }
        });

        Thread t3=new Thread(()->{
            for (int i = 0; i <10 ; i++) {
                synchronized (lock3){
                    try {
                        lock3.wait();
                        System.out.println("C");
                        synchronized (lock1){
                            lock1.notify();
                        }
                    } catch (InterruptedException e) {
                        throw new RuntimeException(e);
                    }
                }

            }

        });

        t1.start();
        t2.start();
        t3.start();
        Thread.sleep(1000);
        synchronized (lock1){
            lock1.notify();
        }

    }
}
